USCG USCG Electrical
Set 2 • Question #32 of 142
Launch Interactive Practice Room The current at which a magnetic-type overload relay tends to trip may be decreased by raising the plunger further into the magnetic circuit of the relay. This action __________.
A
reduces magnetic pull on the plunger and requires more current to trip the relay
B
reduces magnetic pull on the plunger and requires less current to trip the relay
C
increases magnetic pull on the plunger and requires more current to trip the relay
D
increases magnetic pull on the plunger and requires less current to trip the relay
✓ Correct Answer
USCG NMC Regulatory Explanation
In USCG Marine Electrical Systems (IEEE 45 and 46 CFR), regarding 'The current at which a magnetic-type overload relay tends to trip may be decreased by raising the plunger further into the magnetic circuit of the relay. This action', the compliant technical standard is: 'increases magnetic pull on the plunger and requires less current to trip the relay'.
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